:root { --bg:#f4f5f7; --surface:#fff; --ink:#101826; --ink-2:#4a5568; --muted:#8a94a6; --line:#e3e6ec; --brand:#b87400; --accent:#ffc21a;
  --brand-grad: linear-gradient(160deg,#0f1a2b 0%,#16263d 55%,#1f3656 100%); }
@media (prefers-color-scheme: dark) { :root { --bg:#0b111b; --surface:#141c29; --ink:#eef2f8; --ink-2:#b3bccb; --muted:#7d889b; --line:#253043; --brand:#ffc21a; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--ink); font:15.5px/1.65 "Plus Jakarta Sans",system-ui,sans-serif; }
header { background:var(--brand-grad); color:#fff; padding:18px 20px 28px; border-radius:0 0 28px 28px; }
.top { max-width:720px; margin:0 auto; }
.back { display:inline-flex; align-items:center; gap:10px; color:#fff; text-decoration:none; font-weight:800; font-size:20px; letter-spacing:-.03em; }
.back img { width:34px; height:34px; }
.ai-badge { font-size:10px; font-weight:800; padding:3px 6px; border-radius:6px; background:var(--accent); color:#101826; }
h1 { font-size:28px; letter-spacing:-.03em; line-height:1.15; margin:22px 0 0; }
main { max-width:720px; margin:0 auto; padding:24px 20px 60px; }
.card { background:var(--surface); border:1px solid var(--line); border-radius:18px; padding:6px 22px 18px; }
h2 { font-size:18px; margin:22px 0 6px; letter-spacing:-.01em; }
p, li { color:var(--ink-2); }
a { color:var(--brand); }
.meta { color:var(--muted); font-size:13px; margin-top:16px; }
footer { text-align:center; padding:0 20px 40px; font-size:13px; }
footer a { margin:0 8px; color:var(--ink-2); text-decoration:none; font-weight:600; }